> Two points here: If Daryl is computing the
> elapsed time on Ken's clock, and Daryl is
> using an inertial coordinate system, then
> he doesn't need any Gammas. The answer, as
> I said is just this: the time tau on Ken's
> clock as a function of Daryl's coordinate t
> is given by:
>
>    tau = Integral of square-root(1-(v/c)^2) dt

"v" is not constant, a=dv/dt is not constant.
How will you do an "integral" if "v" is variable?